21247996

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{463}}^1$

素因数の和:634

約数の個数: 48

約数和(自身を含む): 46771200

約数和(自身を除く): 25523204

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 149, 154, 298, 308, 463, 596, 926, 1043, 1639, 1852, 2086, 3241, 3278, 4172, 5093, 6482, 6556, 10186, 11473, 12964, 20372, 22946, 35651, 45892, 68987, 71302, 137974, 142604, 275948, 482909, 758857, 965818, 1517714, 1931636, 3035428, 5311999, 10623998, 21247996]

約数ペア:

[(1, 21247996), (2, 10623998), (4, 5311999), (7, 3035428), (11, 1931636), (14, 1517714), (22, 965818), (28, 758857), (44, 482909), (77, 275948), (149, 142604), (154, 137974), (298, 71302), (308, 68987), (463, 45892), (596, 35651), (926, 22946), (1043, 20372), (1639, 12964), (1852, 11473), (2086, 10186), (3241, 6556), (3278, 6482), (4172, 5093)]